<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
      html,
      body{
        margin: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        
      }

      .dg.main > ul {
        overflow: initial;
      }

      .outer {
        padding: 50px;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }

      canvas {
        /* border: 1px solid black; */
        width: 100%;
        height: 100%;
      }

    </style>
</head>

<body>
  <div class="outer">
    <canvas id="engine-nirvana"></canvas>
  </div>
</body>